On Fri, 2014-08-08 at 12:07 +0200, Julia Lawall wrote:
> From: Julia Lawall <julia.law...@lip6.fr>
> 
> Simplify the error path to avoid calling of_node_put when it is not needed.
> 
> The semantic patch that finds this problem is as follows:
> (http://coccinelle.lip6.fr/)

Change the subject to powerpc/4xx/cpm or something like that,
appart from that:

Acked-by: Benjamin Herrenschmidt <b...@kernel.crashing.org>

> 
> // <smpl>
> @@
> expression e;
> @@
> 
> -if (e)
>    of_node_put(e);
> // </smpl>
> 
> Signed-off-by: Julia Lawall <julia.law...@lip6.fr>
> 
> ---
>  arch/powerpc/sysdev/ppc4xx_cpm.c |    8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/arch/powerpc/sysdev/ppc4xx_cpm.c 
> b/arch/powerpc/sysdev/ppc4xx_cpm.c
> index 82e2cfe..ba95adf 100644
> --- a/arch/powerpc/sysdev/ppc4xx_cpm.c
> +++ b/arch/powerpc/sysdev/ppc4xx_cpm.c
> @@ -281,7 +281,7 @@ static int __init cpm_init(void)
>               printk(KERN_ERR "cpm: could not parse dcr property for %s\n",
>                      np->full_name);
>               ret = -EINVAL;
> -             goto out;
> +             goto node_put;
>       }
>  
>       cpm.dcr_host = dcr_map(np, dcr_base, dcr_len);
> @@ -290,7 +290,7 @@ static int __init cpm_init(void)
>               printk(KERN_ERR "cpm: failed to map dcr property for %s\n",
>                      np->full_name);
>               ret = -EINVAL;
> -             goto out;
> +             goto node_put;
>       }
>  
>       /* All 4xx SoCs with a CPM controller have one of two
> @@ -330,9 +330,9 @@ static int __init cpm_init(void)
>  
>       if (cpm.standby || cpm.suspend)
>               suspend_set_ops(&cpm_suspend_ops);
> +node_put:
> +     of_node_put(np);
>  out:
> -     if (np)
> -             of_node_put(np);
>       return ret;
>  }
>  


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